Domestic-league season · Ulsan Hyundai FC.
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 K League 1 | 30 | 1 | 3 | 611 | 6.93 |
 FIFA Club World Cup | 2 | 1 | 1 | 165 | 7.6 |
 AFC Champions League Elite | 5 | 2 | 1 | 121 | 7.06 |
 FA Cup | 1 | 0 | 0 | 68 | — |
Won-Sang's current-season form is down 40% on last season (Season 15→9), while his Rating eased 47→35. His peak season for form remains 2022/23 (Season 43).
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | Ulsan Hyundai FC · 3rd | 30 | 1 | 3 | 6.93 | 35 | 9 |
| 2024/25 | Ulsan Hyundai FC · 1st | 26 | 4 | 0 | 7.15 | 47 | 15 |
| 2023/24 | Ulsan Hyundai FC · 3rd | 11 | 0 | 2 | 6.86 | 42 | 6 |
| 2022/23 | Ulsan Hyundai FC · 1st | 33 | 12 | 6 | 7.07 | 55 | 43 |
| 2021/22 | Gwangju FC · 3rd | 26 | 6 | 1 | 6.85 | 51 | 23 |
| 2020/21 | Gwangju FC · 6th | 23 | 7 | 2 | 7.08 | 50 | 36 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
Um Won-Sang is a 27-year-old attacking midfielder at Ulsan Hyundai FC, rated 35.2 overall by Field Insider's model, ranking 40th of 148 in the K League 1. In his prime years, he has been a fringe squad member this season (17.9% of available minutes). He brings 0.59 goal contributions per 90 (0.15 goals, 0.44 assists). Below: strengths, watch-points, market-value outlook and the latest transfer news on Won-Sang.
Judged on this season alone, Won-Sang graded 9 — a workmanlike campaign that ranks 5th of 7 of the 7 attacking midfielders in the K League 1, on 1 goal and 3 assists in 30 appearances (0.589 involvements per 90).
Year-on-year, that's a drop on last season (Season 15 → 9). Over the 6 seasons on record his form has drifted down, peaking in 2022/23.
On long-term talent our Rating reads 35, 4th of 7 of the 7 attacking midfielders in the K League 1. At 27 Won-Sang is in his prime years, and a market index of 23.9 reflects that trajectory.
Below his 2022/23 peak but holding a solid level — the platform for a return is there.
1 goal in 30 appearances (0.03 per game) — light end product the role wants to see climb. He also laid on 3 assists, so the all-round involvement reads 4 goal contributions (0.13 per appearance).
With a Rating of 35.2, Won-Sang carries the 4th-highest potential of the attacking midfielders in the K League 1 of 7 — though on just 30 appearances this season, so the standing rests on a small sample. In the final third he profiles as a genuine goal threat (0.59 goal contributions per 90). In the prime window — at or near peak market value, so the next two seasons are the ones to cash in or build around.
Generated from Field Insider's rating model · AI-written analysis to follow.
The gold line is market value — an index (not €) blending rating, age and league. It climbs through the early 20s, peaks around ages 23–27 (~24), then tapers with age. At 27, Won-Sang sits on 23.9, at or near its peak. The blue line is Won-Sang's projected Rating — 35.2 today — recomputed at each age, so it follows the same rise-and-fall as a career matures and declines. Solid = up to today; dashed = projected.
No transfer news found for this player.
